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High Creep Rupture Strength Seamless Steel Tubes and Pipes for High Pressure Boiler GB/T 5310 20G 20MnG 25MnG TORICH is a professional manufacturer of high pressure boiler tubes, which is based on technical standard of GB 5310, consists of steel grade 20G 20MnG 25MnG Producsts Name High Creep Rupture Strength Seamless Steel Tubes and Pipes for High Pressure Boiler GB/T 5310 20G 20MnG 25MnG Technical Standard 20G 20MnG 25MnG 15CrMoG Certification ISO 9001 ISO 14001 TS 16949

GB/T 18984 Seamless Steel Tubes for Low-Temperature Service Piping Spec: Material:16MnDG , 10MnDG , 09DG Size Range:OD:4-1200mm WT:0.3-200mm General Length:4-12m Tolerance: According to the following tables or customers’ request. Permissible deviation tolerance of OD and WT Classfication Steel size Permissible tolerance W-H OD ＜351 ±1.0%D ≥351 ±1.25%D WT ≤25 ±12.5%S W-C OD ≤30 ±0.20 ＞30~50 ±0.30 ＞50 ±0.75%D WT ≤3 ＋12.5%S -10%S ＞3 ±10%S Steel grade and chemical composition

Chinese Leading Manufacturer GB5310 Q235 Cold Drawn Carbon Seamless Steel Pipe GB3087 Q235 Carbon Seamless Steel Pipe Steel Grade/Steel Material: Q345 Q195 10# 20# Steel pipe standard: GB5310 Characteristic: Good concentricity Good OD and ID tolerance High Precision Stable quality Smooth Roughness TORICH QUALITY ASSURANCE Size: OD:4-1200mm WT:0.5-200mm Length: 5.8m, 6m, 11.8m, 12m, or as required. Production Processs: RAW MATERIAL ↓ INCOMING INSPECTION ↓ STORAGE → CUTTING

GB/T3087 Q235 Carbon Seamless Steel Pipe For Low And Medium Pressure Boiler Steel Grade/Steel Material:Q345 Q195 10# 20# Steel pipe standard:GB/T3087 Characteristic: Good concentricity Good OD and ID tolerance High Precision Stable quality Smooth Roughness TORICH QUALITY ASSURANCE Size Range: OD:4-1200mm WT:0.5-200mm Length: 5.8m, 6m, 11.8m, 12m, or as required. Production Processs: RAW MATERIAL ↓ INCOMING INSPECTION ↓ STORAGE → CUTTING→HAMMERING → PICKING LUBRICATION →

Air Fin Cooler Finned Copper Tube / Tubing / Pipe HF ERW Spiral Finned Tube, Air Fin Cooler,HF ERW spiral fin tube BaseTube material: Carbon steel(SA106 GrB SA179 BS-3059 Gr.320 ASME SA210-A1) Stainless steel(SA213 304) copper muff Dimension: OD:16-140mm WT:2-10mm Length:1-25m Fin material: CS,1100Al,1060Al ,11Cr,6063,SA213-TP304H,ASME SA515-70 and so on Fin type: KL,L,LL,H ,spiral slot,low,Stud pipes-Visual, type Dimension: Thickness of fin :0.5-4.0mm Height of fin:5-30mm

ASTM A178 Electric resistance welded carbon steel and carbon manganese steel boiler and superheater tubes Applications: for Boilers,Superheaters, Heat-Exchangers, Condensers, Boiler flues, superheater flues and e ends Material: Carbon Steel and carbon manganese steel Production: Electric Resistance Welding Size range: O.D.:6-127mm W.T.:0.9-9.1mm L: according to customer requirement Steel Grade and Chemical Compositions: Element Grade A, Low-Carbon Steel Grade C, Medium

BS 3059 Gr 360 Carbon Steel Heat Exchanger Tubes for Steel Boiler and Superheater Tubes Product Name:BS 3059 Steel boiler and superheater tubes Carbon ,alloy and austenitic stainless steel tubes with specified elevated temperature properties Size Diameter 5-420mm Wall thickness 0.5-50mm Length Upon request Application : for boiler and superheater Produce method: seamless ,welded Delivery condition: hot finished, cold finished CHEMICAL COMPOSITION % max Steel Grade C Si Mn P S

ASTM A178 Electric resistance welded carbon steel and carbon manganese steel boiler and superheater tubes Applications: for Boilers,Superheaters, Heat-Exchangers, Condensers, Boiler flues, superheater flues and e ends Material: Carbon Steel and carbon manganese steel Production: Electric Resistance Welding Size range: O.D.:6-127mm W.T.:0.9-9.1mm L: according to customer requirement Steel Grade and Chemical Compositions: Element Grade A, Low-Carbon Steel Grade C, Medium

ASTM A179 Seamless Cold Drawn Low Carbon Steel Heat Exchanger Tubes and Condenser Tubes Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger Tubes and Condenser Tubes Applications: For Boilers, Superheaters, Tubular Heat-Exchangers, Condensers Heat transfer apparatus U bend Tubes according to Customer request Material: Low Carbon Steel Production: Seamless Cold Drawn Size range: O.D.:3.2-76.2mm W.T.:1-15mm L: according to customer requirement. Steel Grade and Chemical